The farce that is online request forms present on Indian websites

Have you ever seen the “contact forms” that are present on a lot of companies offering services such as Broadband, Telephone Lines, cars, bikes et al? I have and I’m sick of seeing them. Why do these dumbasses put these forms? They are of no utility except for the sole purpose of harvesting email address, phone numbers & other contact details so that they can shove their promotional material down